18215019650domain: NAppears in sequencesNumber of perfect matchings on an n X n L-shaped graph.at n=25A079472Row sums of an unsigned characteristic triangle for the Fibonacci numbers.at n=25A110035Numbers n such that n^3 = x*y*z where 2 <= x <= y <= z , n^3+1 = (x-1)*(y+1)*(z+1).at n=12A240836